<template>
	<div>
		<el-upload
			:action="uploadUrl"
			:before-upload="handleBeforeUpload"
			:on-success="handleUploadSuccess"
			:on-error="handleUploadError"
			name="file"
			:show-file-list="false"
			:headers="headers"
			class="editor-img-uploader"
			v-if="type == 'url'"
		>
			<i ref="uploadRef" class="editor-img-uploader"></i>
		</el-upload>
	</div>
	<div class="editor">
		<quill-editor
			ref="quillEditorRef"
			v-model:content="content"
			contentType="html"
			@textChange="(e) => $emit('update:modelValue', content)"
			:options="options"
			:style="styles"
		/>
	</div>
</template>

<script setup>
import {QuillEditor} from "@vueup/vue-quill";
import "@vueup/vue-quill/dist/vue-quill.snow.css";
import {getToken} from "@/utils/auth";

const {proxy} = getCurrentInstance();

const quillEditorRef = ref();
const uploadUrl = ref(import.meta.env.VITE_APP_BASE_API + "/common/upload"); // 上传的图片服务器地址
const headers = ref({
	Authorization: "Bearer " + getToken()
});

const props = defineProps({
	/* 编辑器的内容 */
	modelValue: {
		type: String,
	},
	/* 高度 */
	height: {
		type: Number,
		default: null,
	},
	/* 最小高度 */
	minHeight: {
		type: Number,
		default: null,
	},
	/* 只读 */
	readOnly: {
		type: Boolean,
		default: false,
	},
	/* 上传文件大小限制(MB) */
	fileSize: {
		type: Number,
		default: 5,
	},
	/* 类型（base64格式、url格式） */
	type: {
		type: String,
		default: "url",
	}
});

const options = ref({
	theme: "snow",
	bounds: document.body,
	debug: "warn",
	modules: {
		// 工具栏配置
		toolbar: [
			["bold", "italic", "underline", "strike"],      // 加粗 斜体 下划线 删除线
			["blockquote", "code-block"],                   // 引用  代码块
			[{list: "ordered"}, {list: "bullet"}],      // 有序、无序列表
			[{indent: "-1"}, {indent: "+1"}],           // 缩进
			[{size: ["small", false, "large", "huge"]}],  // 字体大小
			[{header: [1, 2, 3, 4, 5, 6, false]}],        // 标题
			[{color: []}, {background: []}],            // 字体颜色、字体背景颜色
			[{align: []}],                                // 对齐方式
			["clean"],                                      // 清除文本格式
			["link", "image", "video"]                      // 链接、图片、视频
		],
	},
	placeholder: "请输入内容",
	readOnly: props.readOnly
});

const styles = computed(() => {
	let style = {};
	if (props.minHeight) {
		style.minHeight = `${props.minHeight}px`;
	}
	if (props.height) {
		style.height = `${props.height}px`;
	}
	return style;
});

const content = ref("");
watch(() => props.modelValue, (v) => {
	if (v !== content.value) {
		content.value = v == undefined ? "<p></p>" : v;
	}
}, {immediate: true});

// 如果设置了上传地址则自定义图片上传事件
onMounted(() => {
	if (props.type == 'url') {
		let quill = quillEditorRef.value.getQuill();
		let toolbar = quill.getModule("toolbar");
		toolbar.addHandler("image", (value) => {
			if (value) {
				proxy.$refs.uploadRef.click();
			} else {
				quill.format("image", false);
			}
		});
	}
});

// 上传前校检格式和大小
function handleBeforeUpload(file) {
	const type = ["image/jpeg", "image/jpg", "image/png", "image/svg"];
	const isJPG = type.includes(file.type);
	//检验文件格式
	if (!isJPG) {
		proxy.$modal.msgError(`图片格式错误!`);
		return false;
	}
	// 校检文件大小
	if (props.fileSize) {
		const isLt = file.size / 1024 / 1024 < props.fileSize;
		if (!isLt) {
			proxy.$modal.msgError(`上传文件大小不能超过 ${props.fileSize} MB!`);
			return false;
		}
	}
	return true;
}

// 上传成功处理
function handleUploadSuccess(res, file) {
	// 如果上传成功
	if (res.code == 200) {
		// 获取富文本实例
		let quill = toRaw(quillEditorRef.value).getQuill();
		// 获取光标位置
		let length = quill.selection.savedRange.index;
		// 插入图片，res.url为服务器返回的图片链接地址
		quill.insertEmbed(length, "image", import.meta.env.VITE_APP_BASE_API + res.fileName);
		// 调整光标到最后
		quill.setSelection(length + 1);
	} else {
		proxy.$modal.msgError("图片插入失败");
	}
}

// 上传失败处理
function handleUploadError() {
	proxy.$modal.msgError("图片插入失败");
}
</script>

<style>
.editor-img-uploader {
	display: none;
}

.editor, .ql-toolbar {
	white-space: pre-wrap !important;
	line-height: normal !important;
}

.quill-img {
	display: none;
}

.ql-snow .ql-tooltip[data-mode="link"]::before {
	content: "请输入链接地址:";
}

.ql-snow .ql-tooltip.ql-editing a.ql-action::after {
	border-right: 0px;
	content: "保存";
	padding-right: 0px;
}

.ql-snow .ql-tooltip[data-mode="video"]::before {
	content: "请输入视频地址:";
}

.ql-snow .ql-picker.ql-size .ql-picker-label::before,
.ql-snow .ql-picker.ql-size .ql-picker-item::before {
	content: "14px";
}

.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="small"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="small"]::before {
	content: "10px";
}

.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="large"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="large"]::before {
	content: "18px";
}

.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="huge"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="huge"]::before {
	content: "32px";
}

.ql-snow .ql-picker.ql-header .ql-picker-label::before,
.ql-snow .ql-picker.ql-header .ql-picker-item::before {
	content: "文本";
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="1"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="1"]::before {
	content: "标题1";
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="2"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="2"]::before {
	content: "标题2";
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="3"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="3"]::before {
	content: "标题3";
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="4"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="4"]::before {
	content: "标题4";
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="5"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="5"]::before {
	content: "标题5";
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="6"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="6"]::before {
	content: "标题6";
}

.ql-snow .ql-picker.ql-font .ql-picker-label::before,
.ql-snow .ql-picker.ql-font .ql-picker-item::before {
	content: "标准字体";
}

.ql-snow .ql-picker.ql-font .ql-picker-label[data-value="serif"]::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value="serif"]::before {
	content: "衬线字体";
}

.ql-snow .ql-picker.ql-font .ql-picker-label[data-value="monospace"]::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value="monospace"]::before {
	content: "等宽字体";
}
</style>
